body{
    margin: 0px;
    width:100%;
    font-family: "宋体";
    background: #f3ffff;
    margin: 0 auto;
}
a{
    color: white;
    text-decoration: none;
}
li{
    list-style: none;
    float: left;

}
/*头部信息*/
.header{

}
/*顶端*/
.hearder_top{
    position:relative;
    width:100%;
    height: 30px;
    background-color:#efefef;
    margin: 0px auto;
    border-bottom: 5px solid #dddddd;
}
.img_logo{
    position: absolute;
    left:10px;
    top:5px;
    width: 55px;
}
.ul_head{
    margin: 0;
    margin-left: 30px;


}
.ul_head li{
    font-size: 14px;
    padding: 7px 15px ;

}
.ul_head li:hover{
    background: deepskyblue;
    color: white;
    border-bottom: 6px solid dodgerblue;
}

.ul_head_2{
    margin: 0;
    right: 30px;
    top: 3px;
    position: absolute;

}
.ul_head_2 li{
    padding: 5px 13px;
    font-size: 12px;

}
.ul_head_2 a{
    color: gray;
}
.ul_head_2 a:hover{
    text-decoration: underline;

}
/*头部搜索栏*/
.header_middle{
    height: 75px;
    background:#74bbff;
    width: 100%;
}
.head_search{
    position: absolute;
    margin-top: 30px;
    left: 400px;
    width: 400px;

}
.search{
    color: gray;
    padding: 5px 0px 4px 4px;
    font-size: 11px;

    margin: 0;
    left: 275px;
    top: 20px;
    border: none;
    border-bottom: 1.5px solid #bcbcbc;
}
.head_submit{
    background-color: #34a5f3;
    color: white;
    font-size: 12px;
    font-weight: bold;
    border: none;
    left: 557px;
    display: inline-block;
    width: 50px;
    height: 23px;
    letter-spacing: 2px;
    margin-left: -7.9px;
    border-bottom: 1.5px solid #329ce8;
    cursor:pointer;

}
.head_submit:hover{
    background-color:lightskyblue;
}
/*头部列表*/
.header_bottom{
    height: 25px;
    background: #4ea7ff;
    border-bottom: 2px solid #4697e5;

}
/*菜单列表*/
.nav_list{
    margin: 0 ;
    margin-left: 300px;
    position: relative;
    width: 800px;


}
.nav_list li{

    display:block;
    height: 25px;
    width: 100px;
    text-align: center;
    line-height: 25px;
    font-weight: bold;
    font-size: 16px;
    padding: 0px 5px;

}
.nav_list a{
    z-index: 900 ;
}
.nav_list li:hover{
    background: #329ce8;
    cursor: pointer;
}

.logo{
    background: url("photo/logo.gif") #3495f3 no-repeat  ;
    height: 55px;
    width: 230px;
    position: absolute;
    padding-bottom:30px;
    left: 30px;
    margin-top: 20px;
    box-shadow: 2px 2px  gray;
}
.logo_nav{
    background: #34a5f3;
    height: 25px;
    width: 125px;
    text-align: center;
    position: absolute;
    right: 30px;
    margin-top: 82px;
    line-height: 25px;
    font-size: 13px;
    font-weight: bold;
    letter-spacing: 1px;
    box-shadow: -2px 2px gray;
    cursor: pointer;
    color: white;
    z-index: 1000;
}

.logo_nav:hover{
    background:#efefef ;
    color: #34a5f3;
}


/*注册表*/
.content{
    width: 1200px;
    height: 500px;
    border: 1px solid darkgray;
    margin: 0 auto;
    margin-top: 50px;

}
/*注册表头部*/
.content_head{
    height: 25px;
    background:#f1f1f1 ;
    border-bottom: 1px solid darkgray;
    line-height: 25px;
    width: 100%;
}
.content_head a:hover{
    text-decoration: underline;
}
/*注册表内容*/
.content_mid{

    width: 100%;

    margin:0 auto ;
    margin-top: 30px;
}

.content_mid tr td{
    font-size: 12px;

}
.content_mid select{
    margin: 15px;
}
.content input{
    margin: 15px;

}
.content_mid table{
    margin:0 auto;

}

.td1{
    width: 80px;
    margin: 0;
    padding: 0;

}
.content_mid td{
    border-bottom: 1px dashed gray;
}
.content_mid sup{
    color: red;
;
}
.but{
    width:50px;
    height: 20px;
    background: #34a5f3;
    border: none;
    color:white;
    font-weight: bold;
    margin-left: 500px;
    margin-top: 20px;
    font-size: 12px;
    box-shadow: 0px 2px  2px #3495f3;

}
.but:hover{
    background: #74bbff;
    cursor:pointer;
}
/*底部*/
.line{
    width: 100%;
    height: 3px;
    margin-top: 20px;
    background:#bcbcbc;
}
/*底部列表*/
.under_nav{
    width: 420px;
    position:absolute;
    height: 25px;
    float: right;
    background: #f1f1f1;
    right:20.5px;
    margin-top: -10px;
    z-index: 1000;
}

.under_nav ul{
    margin-left: 50px;
}
.under_nav ul li{
    float: left;
    font-size: 12px;
    margin-top: -13px;
    border-right: 1px solid gray ;
    padding: 2px 10px;
    line-height:15px;
}
.under_nav a{
    color:#545454;
}
.under_nav a:hover{
    text-decoration: underline;
}
/*结尾内容*/
.end{
    box-sizing: border-box;
    height: 120px;
    width: 100%;
    border-left: 20px solid #bcbcbc;
    border-bottom: 20px solid #bcbcbc;
    border-right: 20px solid #bcbcbc;
    border-top: 1px solid #bcbcbc;
    text-align: center;

}
